REPAIR OR REPLACEMENT - continued - TM-9-4120-423-14-P0435

TM9 4120-423-14&P

Replace gasket if damaged.

Slip new wiring assembly up through hole in junction box and secure with four screws and nuts.

Solder wires to compressor and attach grounding points.

Secure the junction box cover to the compressor junction box with screw.

To replace compressor, check to see that the power has been disconnected at the power source

and covers have been removed during access and testing, proceed as follows.

Discharge the Refrigerant R-22 system per WP0070.

While purging the system with nitrogen, debraze the tubing. (See WP0071 and WP0072).

Using socket, extension, and ratchet, remove four cap screws, lockwashers, and mounting

sleeves from top of compressor mounting feet.

Spring tubing up and out of the way.

WARNING

If compressor burnout is suspected, use care when handling compressor to avoid touching

compressor sludge. Acid in sludge can cause burns. Avoid inhaling fumes and burns

from any acid formed by burnout of oil and Refrigerant R-22. Wear gas mask if area is

not thoroughly ventilated. Wear protective goggles or glasses to protect eyes. Wear

rubber gloves to protect hands. Use care to avoid spilling compressor burnout sludge. If

sludge is spilled, clean area thoroughly.

CAUTION

Compressor weighs 65 pounds (30 kg). Two-person lift is required.

Carefully slide compressor from housing through left end.

Check the compressor to see if a motor burnout is indicated.

After removal of a bad compressor from the refrigeration system, remove all external tubing and

tip the compressor toward the discharge port to drain sample of oil into a clear glass container.

If the oil is clean and clear, and does not have a burnt acid smell, the compressor did not fail

because of motor burnout. If a burnout is not indicated, proceed to compressor installation.

If the oil is black, contains sludge and has a burnt acid odor, the compressor failed because of

motor burnout.

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